My history: 34 year male, very active. Plays alot soccer.
ACL on left knee in 1990.
ACL reconstruction on left knee in Nov. 2007 - achilles tendon allograft.
A few days ago I was leaving my apartment, I stepped down on a step to go down the stairs with my left foot and felt a sharp pain in my knee. I felt like my knee was not ready for the step. It also seems that my quadriceps strongly contracted at the same moment I touched down. The pain was quick, and went immediately away, after 15 minutes my knee became a little swollen and stiff.
It has been 4 days since the incident and my knee is still a little swollen and stiff. I have no pain anywhere, just soreness and can walk normally. Most of the swelling is on the outside and above the kneecap, it fills in that little pocket where the quad meets the joint. The muscles on the back of my knee are a little sore and there is a small bruise present on the back of knee as well.
My question is: did I tear or strain my ACL graft? What did I do?
Also, I have been doing proprioception/balance training for over a year...why did this happen to me? What can I do to improve the neuro-muscular connection in my knee?
Much thanks for any input.
Asked by eposos - 7 answers - 8 years 11 weeks ago